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Mercury Serpentine Belt - Sierra Marine Engine Parts - 18-18000 (118-18000) from SeaStar Solutions is a premium quality serpentine belt designed for Mercury Mariner outboards. The serpentine belt is necessary for your vehicle's cooling system to function correctly. It provides power to the alternator, power steering pump, air conditioning compressor, and, in some cars, the water pump. The serpentine belt is always turning when the engine is running. This product replaces part numbers 57-892318, 47-18000, 808282200084, and 9-55020.
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For: 75/90/115 DFI 1.5L